Now, to the mania over 12-12-12. That's today's date, december 12th, 2012. So many people believe it may be the luckiest day of our lifetime. Around the world, s are rushing to get married before the day's end. Where else would we find nick watt but at a wedding chapel in las vegas. And it looks like you're about to walk down the aisle. Reporter: I'm just here in a supervisory capacity. Actually waiting for the next bride and groom next in line. They're just freshening up before their big moment. Since midnight, we've seen couples from australia, sweden, nebraska, all coming here to the epicenter of this 12-12-12 matrimonial craziness. I pronounce you two, husband and wife. Reporter: Ellie and tim got married at exactly 12 after midnight, 12-12-12. And you think 12-12-12 is going to bring you luck? Yes. Reporter: Longevity. Make it work? We're hoping so. Reporter: This place is packed with wanna lucky couples. the middle of the night in las vegas? It's what we could do on 12-12-12. Reporter: David's bridal claims 7,500 brides will tie the knot today. An increase over last year. This is people's last chance to do something memorable on a date like this. Reporter: And it will be another 88 years and 19 days until january 1, 2101, the next day all the digits line up. The 12 is a spiritual, lucky number. 'S a number of completion. Reporter: Double sixes is home, heart and family. LUCKY, LUCKY little McKenzie gibson from kansas city, missouri, plays number 12 on her soccer team. Today, she turns 12 years old. It's going to be a really special and unique day. Reporter: Plenty moms want what McKenzie has. We heard of c-sections scheduled for today. Along with 300 weddings, here at the chapel. If you ever forget your anniversary. Yeah. He's in trouble. Reporter: Some say it's lucky. I say it's just an impossible date to forget. Now, this particular chapel is where britney spears got married. You remember the infamous 55-hour marriage. That's all it lasted. I'm hoping that some of the 12-12-12 magic means the joy we've seen here today, the marriages will last a lot longer than that. As so many vegas weddings. Nick watt, thank you so much. He looks good in a tux. He does. I love it. I thought he was going to ask

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